Comment 15 for bug 952521

Jonathan, my blanking problem started immediately after xsettings-kde (0.12.3-0ubuntu2) was upgraded (0.12.3-0ubuntu2.1) last Friday. My 64bit precise installation display screen has been working perfectly since I installed Precise after the Alpha release. Xsettings-kde was the only upgrade on last Friday which was related to the xserver. All the others were related to the cups package.

Another thing I have tried is to set the powersave parameter of the i915 kernel module:

options i915 powersave=0

and that appeared to work for a while. I set it at around 2pm Saturday and after a reboot the screen did not blank for the rest of the day, till shutdown around 11pm. However, I booted up about 8pm tonight (Sunday) and about 10pm the blanking resumed. To keep the blanking off I have to open a Konsole and issue "xset dpms 0 0 0" followed by "xset -dpms" and keep the Konsole open but minimized to keep out of my way.

I should add that I am running KDE 4.8.3 from the Ubuntu launchpad ppa, which I installed